# IOpcServiceRequest Interface

<dl class="api-definition">
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx.services">Opc.UaFx.Services</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Members</dt>
<dd><a href="./members">IOpcServiceRequest Members</a></dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Defines an interface which provides the header of the request of a service.

## Syntax

<div class="api-signature" data-lang="csharp">

```csharp
public interface IOpcServiceRequest
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Interface IOpcServiceRequest
```

</div>

## Derived types

- [OpcAddNodesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcaddnodesrequest/)
- [OpcAddReferencesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcaddreferencesrequest/)
- [OpcBrowseNextRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowsenextrequest/)
- [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/)
- [OpcCallMethodsRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opccallmethodsrequest/)
- [OpcDeleteNodesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcdeletenodesrequest/)
- [OpcDeleteReferencesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcdeletereferencesrequest/)
- [OpcReadEventsHistoryRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcreadeventshistoryrequest/)
- [OpcReadNodesHistoryRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcreadnodeshistoryrequest/)
- [OpcReadNodesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcreadnodesrequest/)
- [OpcRegisterNodesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcregisternodesrequest/)
- [OpcServiceRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcservicerequest/)
- [OpcServiceRequest&lt;TCommand, TCommands&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcservicerequest-2/)
- [OpcTranslatePathsRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opctranslatepathsrequest/)
- [OpcUnregisterNodesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcunregisternodesrequest/)
- [OpcUpdateNodesHistoryRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcupdatenodeshistoryrequest/)
- [OpcWriteNodesRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcwritenodesrequest/)

## Properties

| Name | Description |
|---|---|
| [Header](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.iopcservicerequest/members#header) | Gets the header of the request. |

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.5–v2.59 |